Read about unusual animal journeys around the world, from wandering saltwater crocodiles to invasive insect species and outbreaks of Australian plague locust. Interesting facts, unexpected outcomes, and human impacts on the journeys are highlighted. Provided by publisher.

Introduction -- Australian plague locust -- Grey squirrel -- Barred knifejaw -- Snowy owl -- European green crabs -- Saltwater crocodiles -- Zebra mussels -- Red crossbills -- Red imported fire ant, Asian long-horned beetle, Asian tiger mosquito -- New patterns of vagrancy.